The best ground cover plants for UK gardens depend on the spot. For clay soil in sun, plant Geranium ‘Rozanne’ and Alchemilla mollis. For dry shade (the hardest spot in any garden), plant Geranium macrorrhizum and Epimedium × versicolor. For evergreen year-round cover, use Bergenia and Vinca minor. Space 5–7 plants per square metre for most perennial ground cover, and mulch between them in the first year.
Ground cover is one of the most useful — and most under-used — tools in UK garden design. Pick the right plants and a weedy, bare patch of soil turns into a living carpet that suppresses weeds, holds moisture, feeds pollinators and looks better every year.
This guide covers the best ground cover for every UK condition, how densely to plant it, how long it takes to fill in, and the species that work under roses, around shrubs and as a lawn alternative.
Why Use Ground Cover Plants?
There are four reasons to cover bare soil with living plants rather than leaving it open or bark-mulched.
1. Weed suppression. Bare soil is an invitation to weed seeds. A dense mat of ground cover shades the soil surface, blocks light and gives weed seedlings nowhere to establish. Done well, it cuts your weeding time by 70–80%.
2. Less watering. Ground cover shades the soil, reducing evaporation. The soil stays cooler and damper for longer, and established plantings rarely need watering once they’re in.
3. No bare soil. Bare soil washes away in heavy rain, bakes hard in summer and grows a crust that sheds water. Living cover protects the structure of the soil and keeps it biologically active.
4. Wildlife corridors at ground level. Low-growing plantings are where beetles, frogs, small mammals and ground-nesting bees actually live. A gravel mulch supports almost no wildlife. A mat of Ajuga reptans (bugle) and Fragaria vesca (wild strawberry) is a whole ecosystem.
Ground Cover for Full Sun
South-facing borders, open lawn edges, gravel gardens and hot, dry banks.
- Thymus serpyllum (creeping thyme) — aromatic, evergreen mat, flowers covered in bees in June
- Sedum spurium and Sedum acre (biting stonecrop) — drought-proof, loved by pollinators
- Cerastium tomentosum (snow-in-summer) — silver foliage, a blanket of white flowers in early summer
- Phlox subulata (moss phlox) — dense carpets of pink, mauve or white in April–May
- Geranium ‘Rozanne’ — the best hardy geranium ever bred; flowers June to November; unbeatable for sunny clay
- Geranium ‘Johnson’s Blue’ — similar role, flowers slightly earlier
- Nepeta × faassenii (catmint) — billowing, aromatic, deer and rabbit proof, bees adore it
These are tough, drought-tolerant plants that fill a square metre within one growing season if planted at the right density.
Ground Cover for Dry Shade (The Hardest Spot in the Garden)
Under mature trees, against north-facing walls, beside hedges. Dry shade defeats most plants. These don’t just cope — they thrive.
- Epimedium × versicolor (barrenwort) — the classic dry-shade plant; heart-shaped leaves, sprays of yellow or pink flowers in spring
- Symphytum grandiflorum (creeping comfrey) — spreads well, cream flowers, bee magnet
- Pachysandra terminalis — evergreen, glossy, very dense once established
- Geranium macrorrhizum — aromatic foliage, pink flowers, tough as anything
- Vinca minor (lesser periwinkle) — evergreen, blue flowers, fills in fast
- Euphorbia amygdaloides var. robbiae (Mrs Robb’s bonnet) — evergreen, lime-green bracts in spring, spreads steadily
If you inherit a garden with dry shade and nothing growing, plant Geranium macrorrhizum or Epimedium × versicolor and walk away for a season. They’ll do the rest.
Ground Cover for Moist Shade
North-facing borders with decent soil moisture, under deciduous trees, beside ponds.
- Pulmonaria (lungwort) — early spring flowers that change colour from pink to blue
- Tiarella (foam flower) — delicate white flower spikes, beautifully marked foliage
- Bergenia (elephant’s ears) — bold evergreen leaves, pink or white flowers
- Lamium maculatum (dead nettle) — silvered leaves, pink or white flowers, spreads fast
- Ajuga reptans (bugle) — blue flower spikes in May, native, loved by bees
- Hosta — unbeatable foliage if slugs are under control (nematodes in April)
- Brunnera macrophylla — clouds of tiny blue flowers like forget-me-nots, handsome leaves
Moist shade is the easiest shade to plant. The plant list here also works on the cool, damp side of a house.
Ground Cover for Clay Soil
Most Surrey and Sussex gardens sit on clay. These cope with heavy, wet winter soil and summer cracks.
- Geranium ‘Rozanne’ — flowers for six months straight
- Persicaria affinis (knotweed) — pink bottle-brush flowers from July to October, spreads well
- Alchemilla mollis (lady’s mantle) — chartreuse flowers, pleated leaves that catch raindrops beautifully
- Geranium endressii — pink flowered, spreads to form large patches
Clay soil is fertile but cold. Plant in spring or early autumn — avoid planting into cold, wet winter clay.
Evergreen Ground Cover (Year-Round Cover)
If the soil disappears in winter when herbaceous plants die back, weeds come straight in. Evergreen ground cover keeps the structure.
- Bergenia — big glossy leaves, often colouring red in winter
- Heuchera — every colour of leaf imaginable, flowers in summer
- Euonymus fortunei — variegated types light up a shady spot
- Vinca minor — evergreen, spreads fast, flowers blue in spring
- Pachysandra terminalis — the gold-standard dry-shade evergreen
Plant a mix — Bergenia at the front for winter drama, Vinca minor running between, Heuchera for foliage colour — and the border holds its shape through January and February.
Native and Wildlife-Friendly Ground Cover
UK natives support more insects, which support more birds. If wildlife is a priority, weight the planting with these.
- Primula vulgaris (primrose) — native, spring, pollinator favourite
- Fragaria vesca (wild strawberry) — spreads by runners, edible fruit
- Ajuga reptans (bugle) — native, bees love it
- Thymus serpyllum (wild thyme) — native, essential pollinator forage
- Geranium pratense (meadow cranesbill) — native, blue flowers, tough
A wildlife-friendly ground cover planting is rarely monotonous. Mix species and the pollinator value keeps stacking.
Planting Density: How Many Plants per Square Metre?
This is where most gardeners go wrong — plant too sparsely and the weeds win before the ground cover fills in.
| Plant type | Plants per sq m | Typical spacing |
|---|---|---|
| Herbaceous ground cover (geraniums, alchemilla) | 5–7 | 40–45cm |
| Low mat-formers (thyme, phlox subulata) | 7–9 | 30–35cm |
| Shrubby cover (pachysandra, vinca) | 4–6 | 40–50cm |
| Large architectural plants (bergenia, hosta) | 3–4 | 50–60cm |
Always plant for the first year, not the fifth. Buying three plants to cover a square metre and hoping they spread is a recipe for two seasons of weeding.
How Long Does Ground Cover Take to Fill In?
- Fast fillers (1 season) — Geranium ‘Rozanne’, Nepeta × faassenii, Alchemilla mollis, Lamium maculatum, Persicaria affinis
- One full growing season — most of the list above
- Two seasons for full coverage — Pachysandra, Epimedium, Bergenia, Tiarella
Plant in autumn or early spring, mulch well in the first year, and most sites look “properly planted” by the end of their first summer.
Mulching While Ground Cover Establishes
Until the plants meet and close over, bare soil between them needs protection.
- Apply 5–7cm of composted bark or leaf mould between young plants in the first autumn and spring after planting
- Keep mulch off the crowns of the plants (pull it back 2–3cm from each stem)
- A mulch reapplied once in spring for two seasons is normally all it takes to keep weeds out while the cover joins up
- Never use plastic weed membrane under ornamental ground cover — it stops the plants spreading and ruins soil biology long-term
Ground Cover Under Roses
A bare rose bed looks naked. Underplanting also suppresses weeds, shades the roots and feeds the pollinators that support the roses.
Best ground cover under roses:
- Nepeta × faassenii — the classic partner; deters aphids
- Alchemilla mollis — frothy chartreuse softens the base of the roses
- Geranium ‘Rozanne’ — flowers all summer alongside the roses
- Low-growing thymes and Calamintha for the sunniest edges
Keep the underplanting 20–25cm away from the main rose stems so air can circulate.
Ground Cover Around Shrubs
Mature shrubs leave dry, shaded pools beneath them — classic ground-cover territory.
- Under acers and birches: Epimedium, Tiarella, small hostas
- Under yew, box and holly: Geranium macrorrhizum, Vinca minor, Pachysandra
- Under magnolias and camellias: Pulmonaria, Brunnera, ferns
Alternatives to a Grass Lawn
A lawn is high-maintenance, thirsty and offers little to wildlife. For small gardens or problem areas (too shady, too steep, too dry) ground cover can replace it.
- Low-traffic open lawn alternative: Thymus serpyllum and Sedum (walkable occasionally)
- Wildlife alternative: Ajuga reptans, Primula vulgaris and native grasses in a mini-meadow mix
- Shady lawn alternative: Geranium macrorrhizum and Pachysandra terminalis under deciduous trees
- Front garden lawn replacement: Low mat-forming geraniums, nepeta and ornamental grasses
A no-lawn front garden is far easier to look after than a lawn, and looks better for longer through the year.
When to Plant Ground Cover
- Spring (March–May): excellent — plants establish in cool, moist soil
- Early autumn (September–early November): also excellent — warm soil, cool air, regular rain
- Summer: only with regular watering — stressful for new plants
- Winter: avoid planting into cold, waterlogged clay
For reliable, full-border ground cover plantings, we usually install in March/April or September/October at our Surrey sites.
Frequently Asked Questions
What is the best evergreen ground cover for the UK?
For dry shade, Pachysandra terminalis and Vinca minor. For sun or part-shade, Bergenia and Heuchera. For very cold spots, Euonymus fortunei. All four give 365-day coverage and look presentable through winter.
What ground cover plants suppress weeds?
Dense-growing mat-formers — Geranium macrorrhizum, Nepeta × faassenii, Vinca minor, Pachysandra terminalis, Alchemilla mollis and Persicaria affinis all form weed-proof carpets once established. Plant at 5–7 per square metre and mulch in year one.
What grows in dry shade in the UK?
Geranium macrorrhizum, Epimedium × versicolor, Vinca minor, Euphorbia amygdaloides var. robbiae, Pachysandra terminalis and Symphytum grandiflorum are the six most reliable choices for dry shade. All cope with poor, root-filled soil under trees and hedges.
How quickly does ground cover spread?
Most herbaceous ground cover fills a square metre in one growing season if planted at 5–7 plants per sq m. Shrubby evergreens like Pachysandra and Epimedium take two seasons. Fastest: Geranium ‘Rozanne’, Nepeta and Lamium maculatum.
Can I plant ground cover under trees?
Yes — use Epimedium, Geranium macrorrhizum or Vinca minor. Dig in compost at planting, water through the first summer, and avoid planting within 30cm of the trunk. Native plants under native trees produce the richest wildlife results.
What is the fastest growing ground cover plant UK?
Lamium maculatum and Vinca minor are the fastest spreaders — both will cover a square metre within one season. Use with care on small sites; in larger areas they’re invaluable.
Want Ground Cover Planted Properly?
The hardest part of ground cover is picking the right plants for the actual conditions. Sun, shade, soil type, drainage and existing planting all change the answer. We design and plant living ground cover schemes as part of our garden design and maintenance services across Surrey — from single problem corners to whole-border replanting plans.
